Duplicating attachment for calculating-machines.



E. F. MUMM. DUPLICAIING ATTACHMENT FUR CALCULATING MACHINES.

APPLICATION FILED JAN-2,1915.

Patented Oct. 19, 1915.

3 SHEETS-4"! l.

E. F. MUMM.

DUPLICATING ATTACHMENT FOR CALCULATING MACHINES APPLICATION HLED JAN2.1915.

Patented Oct. 19, 1915.

3 SHEETS-SHEET 2.

7 [run /2Z0! A E. F. MUMM.

DUPLICATING ATTACHMENT FOR CALCULATING MACHINES.

APPLICATION FILED n.2, 1915.

1,157,635. Patented Oct. 19, 1915.

3 SHEElS-SHEET 3.

J Z50 F EDWARD F. m 01 MILWAUKEE, WISCONSIN.

DUILICATING ATTACHIZEKT FOB CAlCULA'I'lNG-MAC'HIN'ES.

Specification of Letters Patent.

Patented Oct. 19, 1915.

Application filed January 2, 1815. Serial H0. 167.

To (LE-81107; it may comrc-rn:

Be it known that I- EDWARD F hip-n11, a citizen of the United States,residing at Hilwaukee, in the county of Milwaukee and State ofWisconsin, have invented new and uxful Improvements in DuplicatingAttachments for Calculatin -Machines, of which the following is a full,clear, conc1se. and exact description, reference had to the accompanyingdrawing, forming a part of this specification.

This invention relates to duplicating mechanism It is particularlyapplicable to duplicating mechanisms for adding machines, typewritersand the like.

One of the objects of the invention is to provide an improvedduplicating mechamsm by mans of which a plurality of copies may bes'multaneously produced Without the use of carbon or other duplicatingpaper.

Another object is to provide a duplicating mechanism which may bereadily attached to standard machines without altering the constructionthereof.

Another object is to provide a simple, compact duplicating mechanismwhich will not interfere with the operation of the machine to which itis attached.

Another object is to provide a duplicating which may be attached ordetached as aunit to a mlculating machine or the like altering eitherthe com struction of the or the attachment.

A further object. isto provide a duplicat ing attachment in which themain part of the may be readily removed from'the machine at will.

Other objects and advantages of the invention will hereinafier appear.

The accompanying drawings illustrate embodiments of the invention.

lire views of the drawing are as follows:

Figure 1 is a rear elevation of the duplieating attachment in pos'tionadjacent the platen ofamaehine; Fig.2isatopplan view of the reelingmechanism and a partial erosseetion oithe supporting means. Fig.3isacros-seiiirmofthesnpportingand of theoperatingmeans. Figslands'iareseotional views of the suporting means. Fig. 6 isa perspectiveof the supporting means. Fig. 7 is a section of the unwinding reelshowing the tension mechanism. Fig. 8 is aside elevation of the deviceapplied to an adding machhie.

The duplicating attachment is adapted to be mounted adjacent the platenl of an adding machine or the like and it comprises in general a pair ofsupports 2 and 3, one of which carries supplementary ribbon reels 4 and5, and the other of which carries a roller 6, over which the ribbon -7is wound. Suitable operating mechanism 8 is provided for automaticallyfeeding the ribbon across the platen from one reel to the other. Thesupport 2 has a stationary member 9 mount ed on one end of the platenshaft 10 and so cured in position by a screw 11 or other suitable means.The member 9 is shaped to fit over the end of the shaft withoutrequiring any' alterations in themechanism. An extension forthe shaft 10may be provided to obtain a suitable hearing. The support 3 has asimilar stationary member 12 mounted on the other end of the platenshaft and secured in position by a screw 13 or other means Slots 14 ofany suitable shape are provided in the stationary members 9 and 12 andslidably mounted in said slots are movable members 1-5 and 16 carryingthe mechanism for supporting and feeding the ribbon. Each of thestationary members 9 and 12 is provided with pins 17 oodperatingwithholes in the movable members so that the .latter may be moved in theslots without being thrown out of alinement. Obviously, pins 17 might beattached to the movable members and ciioperate with holes in thestationary members. By means of this structure the movable members whichcarry the printing ribbon may be moved from operative position without.entirely removing the mechanism from the machine.

This structure is highly practical and tie sir-able as will behereinafter pointed out.

The movable member 15 has a horizontal extension 18 upon which the reels4 and 5 are mounted. The supplementary printing ribbon is wound fiomreel 5 over a roll 19, alongthe printing line of the platen, over roll 6mounted on the movable member 16 and back along-the printing line, overa roll20tothereel4. Itvvillthusbesem that a plurality of layers atribbon in addition to the r1 7 n 'are sup; ported in position on o theplaten where they are available to record the impression of the type.

In order to feed the ribbon acres the platen, a driving mechanism isprovided.

The shaft of reel 4 has an extension 21 upon which is mounted a beveledgear codperating with a second gear 23 loosely mounted upon the shaft24. The shaft 24 is a part of the regular mechanism of the machine whichoscillates with each operation of the machine. A ratchet wheel 25 isrig'idl connected to gear 23 and cofiperating with the ratchet wheel isa spring pressed pawl 26 mounted in a rocker arm 27 fixedly secured tothe shaft 24 to oscillate therewith. More meat of the shaft 24 in onedirection is transmitted by the pawl :26 to ratchet and through thebevel gears 2322 to the reel 4 which is thereby turned a predeterminedamount with each osrillation of shaft 24. The edge of the reel 4 may benotched as shown and a spring pawl 28 provided which shown in Fig. 7.which is held in engageman; with the hub of reel 5 by an adjustable nut-31. By varying the position of the nut 31 the friction of the springWasher 30 on the hub of the reel is varied and the tension of the ribbonis adjusted. The movable member 16 carrying-the roll 6 has afiange 32over which the printing ribbon poses. This flange keeps the printingribbon out of enggement with the stationary member 12 so that the member16 and the ribbon may be moved without causing damage to the ribbon byreason of its rubbing on the stationary parts of the snpport VTheoperation of the mechanism is as follows: In order to convenientlyinsert the paperbetween the supplementary ribbons fliememherslziand-lfiareraisedto remove Thepins I'Zmagbe made to fit the members 15and 1635 such: manner-that when the'members are inieir raised positionthe weight of the parts throws the members slightly out of alinement mthat they project slightly over of the grooves 1t and thereforein'raised position. with the suptar; printing ribbons in raised pothepaper may be easily inserted betp'een them afier which the members 15and 15' are to their position thereby the ribbon to the printing line.of the machine oscillates the i l vvhose motion is commutbe reel 4 whichmoves the supribbon across the platen. It is obviousrthat each time thetype o sighs the platen it makes a plurality of corresponding in numberto the number of layers of printing ribbon on the priming line. Iferasures become necessary the members 15 and 16 may be raised to removethe supplementary ribbon from the printing line. The erasure may then bemade without smearing the paper after which the members can be moved totheir original position to again render the duplicating mechanismoperative. If no copies are desired the supplementary ribbon may I beallowed to remain in its raiwd position or it may be entirely removed bysimply removing the members 15 and 16 from the stationary members 9 and12.

It will thus be seen that a duplicating attachment has been providedwhich may be readily applied to standard machines Without requiringreconstruction of the same. The attachment is simple, it comprises aminimum number of parts, and occupies a minimum amount of space. Itaccordingly does not detract from the appearance of the machine orinterfere with the practical operation thereof.

The duplicating mechanism is in the form of an attachment which may beapplied as a unit to astandard machine. When applied the supplementaryprinting ribbon islocated along the printing line of the platen and theactuating mechanism for moving the printing ribbon lengthwise cooperateswith the mechanism on the machine so that the ribbon is moved as themachine is operated. The supplementary ribbon may be easily removed fromthe printing line without-removing the mechanism from the machine bysimply raising the slidable parts. If it is desired to remove the ribbonentirely from themachinethismaybeeasilydonebyremoving the slidableparts, thereby leaving only the stationary members attached to themachine adjacent the platen The ribbon mechanism may be easily replacedby s'mply sliding the movable members into place. The entire attachmentmay be removed from the machine by simply removing a few screws andthereby removing the mfionary members as Welles the slidable Thesupplementary ribbon may be easily and quickly removed from the line inorder to facilitate the inmrtion of paper into the machine or to enableerasures to be made. The printing ribbon is continuously fed acres theplaten so that a uniform copy is produced and the wear on the ribbon isdistributed uniformly over the entire length thereof. The reels andoperating mechanism therefor are mounted near one end of the attachmentso that thevare readily accesible for adjustment and repair- Theattachment has been shown with an adding machine but itmay be applied toother similar machines such as typewriters and the like wherein a tvpestrikes a printing ribbon in front of a platen.

While I hare shown and described an embodiment of the inrention itshould be understood that the structure disclosed is merely for thepurpose of illustration and that other structures embodying theinvention may be den'sed, all of which are with' in the spirit and scopeof the appended claims Having thus described my invention what I'claimas new and desire to secure by Metters Patent, is:-

1. A duplicating attachment adapted to be readily applied to addingmachines and the like, comprim'ng stationary members adapted to bereadily mounted adjacent the ends of a platen and means slidably mountedon said members for supporting a supplementar-y printing ribbon adjacentthe printing line of the platen.

2. A duplicating attachment for adding machines and the like. comprisingstationary members adapted to be readily mounted adjacent the ends of aplaten, means slidably mounted on said members for supporting asupplementary printing ribbon adjacent the printing line of the platenand means for automatically moving the ribbon lengthndse.

3- A duplicating attachment for adding machines and the like, comprisingstationary members adapted to be readily mounted ad jacent the ends of aplaten and means slidably mounted on said members for supporting asupplementary printing ribbon in a plurality of layers adjacent theprinting line.

4. A duplicating attachment for adding machines and the like comprisingstationary members adapted to be readily mounted adjacent the ends of aplaten, means slidably mounted on said members for supporting a supp!printing ribbon in a plurality of layers adjacent the printing lineofthe platen and means for automatically moving the ribbon lengthwise.

5 The combination with anadding maof stationary members adapted to bereadily attached thereto adjacent the platen thereof and means carriedby said members for pol-911g a supplementary rin v ribbo ii adjacent theprinting liue of thh platen, said means being slidable on saidstationary members whereby the ribbon may be removed from the printingline.

6. The combination with an adding machine of stationary members adaptedto be mdily attached to the machine adjacent the platen thereof, meanscarried by said members for supporting a supplementary printing ribbonadjacent the printing line of the platen, mid means slidable on saidstationary members whereby the ribbon may be readily removed from theprinting line and meansfor automatically moving the ribbon lengthwiseindependently of the movement of the platen.

T. A duplicating attachment for adding machines and the like, comprisingstationary members adapted to be mounted adjacent the ends of a platen,movable members slidably mounted on said stationary members, a pluralityof ribbon reels carried by one of said movable members, a roller carriedby the other of said members, a supplementary printing ribbon carried bysaid reels and said roller so that it is morably and removably supportedalong the printing line of the platen.

S. A duplicating attachment for adding machines and the like, comprisingstationary members adapted to be mounted adiacent the ends of a platen,movable members slidably mounted on said stationary members a pluralityof ribbon reels carried by one of said movable members, a roller carriedby the other of said movable members, a supplementary printing ribbonwound on said reels and over said roller, whereby it is removablysupported adjacent the printing line of the-platen and means forautomatically moving the ribbon lengthwise as the-machine is operated.

9. A duplicating attachment for adding machines and thellike, comprisingstationary members adapted to be mounted adjacent the ends of a. platernmovable members slidably mounted on said stationary members, a pluragtyof rifiebon reels can-11 'ed by one of said more le rnem rs, a suppementary printing ribbon carriedby said reels and by means on the othermovable member whereby the ribbon is movably supported adjacent theprinting line of the platen, means to actuate one of the ribbon reels tomove the ribbon lengthwise across the platen and means to adjust. the;of the ribbon.

10. A. dnplieatinggattachment for: adding machines and thelikc,comprising stationary members adapted to be mounted adjacent the ends ofa platen, means slidably mounted on said members for movably supporting2 supplementary printing ribbon adjacent the printing line of a platen,and means whereby the movable means may be held in removed position"without being entirely removed from the machine.

11. A duplicating attachment for adding machines and the like adapted tobe readily applied to standard machines without alter ing theconstruction thereof, comprising means adapted to be mounted on themachine adjacent the ends of the platen thereof, means carried by saidfirst named means for supporting a snpplementary printing ribbonadjacent the printing line of said platen, said second means beingmovable & that the printing ribbon may be readily removed from theprinting line, and means ooiiperating with the mechanism of the machinefor automatically moving the ribbon lengthwise of the platen as themachine is operated,

12. A duplicating attachment for adding 130 &

machines and the like adapted to be readily applied to standard machinesWithout alter ing the confirmation thereof, comprising sta tionarymembers adapted to be readily mounted adjacent the ends of a platen andmeans movably mounted on said members for movably supporting asupplementary printing ribbon adjacent the printing line of the platen,said means bemg readlly removable whereby the supplementary ribbon maybe readily removed item the machine.

13 An attachment for adding machines and the like, comprising stationarymembers adapted to be mounted adjacent the ends of a platen, meansslidably mounted on said members for movably supporting a supplementaryprinting ribbon on the prminng line of a platen, means for guiding themovable means on the stationary me so that the movable means may be keptin alinement while being moved to move the ribbon from the printingline.

14-. An attachment for adding machines and the like, comprisingstationary adapted to be mounted adjacent the ends of a plate, meansslidably mounted on said members for supporting a ribbon along theprinting line of a platen, means for automatically moving the ribbonalong the platen, and means for the movable means on the stationarymembers so that said meansmaybekeptinalinementasitis moved to remove theprinting ribbon from the printing line.

15. In combination, an ad r machine having means slidably mounted a jscent the ends ofthe platen thereof for movably supporting asupplementary printing ribbon adjacent the printing line of the platen,and mean for antomatiallymoving the ribbon lengthwise of the platen asthe adding machine is operated.

16. The with an adding machine of supporting members located adjacentthe ends of the plate! of the machine and means slidablv mounted on saidmembers for removably supporting a supplementary ribbon adjacent theprinting line of the platen.

17. A duplicating attachment for adding machines and the like comprismgstationary members adjacent the ends of the platen of the machine. meansslidably mounted on said members movably supporting a supplementaryprinting ribbon adjacent the printing line of the platen. mid membersand means having cooperating pins and aperterns whereby the movablemeans may be moved from its normal and held in its removed positionwithout being removed from the machine.

18. A duplicating attachment comprising a pair of movable membersmovably sup- :1 supplemental-1s printing ribbon, nmns adapted to movesaid ribbon lengthwise and menus for movably supporting said ribbonsupporting members, said last named means being attachable to and(letacbable from a standard calculating machine or the like Withoutaltering the con- 51 ruction thereof whereby the ribbon is movablysupported adjacent the printing line of the platen of the machine, saidribbon moving means being adapted to cobperate with the mechanism of themachine to automatically move the ribbon lengthwise as the machine isoperated.

19. A duplicating attachment for calculating machines and the likecomprising supporting members readily mountable on said machine adjacentthe ends of the platen thereof, means on said members for supporting asupplementary printing ribbon adjacent the printing line of the platenof the machine and means carried by said last named means adapted tocooperate with the mechanism of the machine to automatically move theribbon lengthwise as the machine is operated. said ribbon supportingmeans being removable from said members whereby the ribbon mechanism maybe removed from the machine at will.

'20. In a duplicatin attachment, a supplcmentary printing ri bon, meanssupport ing said ribbon so that it may be moi lengthwise, supportingmembers mountable on a calculating machine or the like without alteringthe construction thereof for receiving said ribbon supporting meanswhereby the supplementary ribbon is supported adjacent the printing lineof the platen and actuating means carried by said ribbon supportingmeans cooperating with the mechanism of the machine to automaticallymove the ribbon lengthwise as the machine is operated, said ribbonsupporting means being movable on said members so that the mechanism maybe moved to an inoperative psition with the ribbon removed from the pting line and so that the ribbon mechanism may be entirely removed fromthe machine at will.

21. Acalculatingmachine attachment comprising a supplementary ribbonmechanism having a pair of members movably supporting a supplementaryprinting ribbon, supporting means for said members by which themechanism as a unit may be attached to and detached from a standardmachine without altering the structure of the mechanism or the machine,said members being movable on said supporting means so that the ribbonmay be removed from the printing line of the platen of the machinewithout removing the mechanism from the machine and means on theattachment cobperating with the mechanism of the calculating machine forautomatically moving the ribbon lengthwise as the machine is operated.

22. A ribbon mechanism for standard calculating machines, having asupplementary printing ribbon, means for movably supporting said ribbonadjacent the printing line of the platen of the machine, means by whichthe mechanism as akunit may be attached to and detached from a standardma.- chine without altering the structure of either the mechanism orthemachine and means associated with the ribbon mechanism cooperating withthe mechanism of the machine for automatically moving'the ribbonlengthwise independently of the rotary movement of the platen.

23. In a duplicating attachment for standard calculating machines, asupplementary printing ribbon, a pair of ribbon reels, means forsupporting said reels and for movably supporting said ribbon adjacentthe print- Coples of this patent may be obtained for ingiline of theplaten, means by which the attachment as a unit may be attached to anddetached from a standard machine without altering the construction ofeither the machine or the attachment and means cooperating with thereels and with the mechanism of the machine for automatically moving theribbon lengthwise independently of the rotary movement of the p aten asthe machine is operated.

Inwitncss whereof, I have hereunto subscribed my name in the presence oftwo witnesses.

EDWARD F.

five cents eaoh, by addressing the Commissioner of Patents, Washington,DAL" Correction in Letters Patent No. |,157,635.'

It is hereby certified that in Letters Patent No. 1,157,635, grantedOctober 19, 1915, upon the application of Edward F. Mumm, of Milweukee,Wisconsin, for an improvement in Duplicating Attachments forCalculating-Machines, an error appears in the printed specificationrequiring correction as follows: Page 4, line 26, claim 14, for the wordplate read platen; and that the said Letters Patent should be read withthis record of the case in the Patent Ofiice.

Signed and sealed this 23rd day of November, A. D., 191-5.

J. T. NEWTON, Acting Commissioner of Patents.

correction therein that the same may conform to the [sEALJ

